CVE-2024-42260

What it actually does

The vulnerability permits userspace to supply unknown or invalid drm syncobj handles in the performance extension handle array, bypassing validation and causing the driver to mishandle the input instead of failing cleanly via unwind.

Why it matters to the business

Systems using the affected graphics driver may experience instability, crashes, or unexpected behavior in performance monitoring workloads, amplified by 496 downstream dependents that increase exposure across the ecosystem.

How an attack unfolds

An attacker crafts a request to the performance extension containing an invalid syncobj handle; the missing validation allows the driver to proceed with the bad handle, leading to undefined behavior rather than an immediate error return.

How to fix it

Apply the kernel patch that validates syncobj handles before use; for listed packages update jquery (npm) to 1.9.0, org.webjars.npm:jquery (Maven) to 1.9.0, and jQuery (NuGet) to 1.9.0.

How to confirm the fix worked

Confirm the presence of handle validation logic that jumps to unwind on lookup failure; test the extension with deliberately invalid handles and verify clean error returns instead of continued execution.

Typical attack path

1. Identify a process or context that can invoke the v3d performance extension ioctl
2. Prepare a handle array containing at least one invalid or unknown syncobj handle
3. Submit the request and observe driver reaction to the unvalidated handle
4. Trigger subsequent operations that rely on the mishandled object to induce instability

How to detect it

Review kernel logs for drm/v3d performance extension entries that mention handle lookup failures or unexpected unwind paths; correlate with processes invoking the extension.

What your security team should do

• Prioritize patching affected kernel packages on all systems exposing v3d hardware
• Inventory downstream dependents (496 identified) and schedule coordinated updates
• Monitor EPSS and exploit maturity indicators for any change in risk posture